编辑表格PHP PDO [英] Edit Form PHP PDO

问题描述

我在SQL Server数据库中有一个表。我创建了一个 edit.php，可以在其中更新数据库。使用PDO建立数据库连接。

I have a table in SQL Server database. I created an "edit.php" where we can update the database. The database connection is established using PDO.

表中有很多 Null 值。当我单击编辑选项时，表格弹出。如果我完全填写了记录，则数据库将得到更新。否则，我会收到此错误消息。

I have a lot of Null values in the table. When I click "Edit" option, the form pops out. If I completely fill the records, the database gets updated. Otherwise I get this error message.

SQLSTATE [42000]：[Microsoft] [用于SQL Server的ODBC驱动程序11] [SQL Server]错误将数据类型nvarchar转换为数字。

SQLSTATE[42000]: [Microsoft][ODBC Driver 11 for SQL Server][SQL Server]Error converting data type nvarchar to numeric.

edit.php的代码如下：

The codes for my edit.php are included below:

require_once('database.php');
if (isset($_POST['btn_submit'])) {
        $id = $_POST['txt_id'];
        $site = $_POST['txt_site_code'];
        $location = $_POST['txt_location_name'];

 try {
       $stmt = $conn->prepare("UPDATE MATRIX SET Site_Code=:site, Location_name=:location
WHERE OBJECTID =:id");
$stmt->execute(array(':site' => $site, ':location' => $location,':id' => $id));
if ($stmt) {


                   header('Location:index.php');

               }
             } catch (PDOException $e) {
               echo $e->getMessage();
            }
}

    $object_id = '';
    $site = '';
    $location = '';

 if (isset($_GET['id'])) {
        $id = $_GET['id'];
        $stmt = $conn->prepare("SELECT * FROM MATRIX WHERE OBJECTID=:id");
        $stmt->execute(array(':id' => $id));
        $row = $stmt->fetch();
        $object_id = $row['OBJECTID'];
        $site = $row['Site_Code'];
        $location = $row['Location_name'];
}

?>
    <h2>Edit the records</h2>

    <form action="" method="post">
        <table border="3px" cellpadding="5px">

            <tr>
                <td>Site Code</td>
                <td><input type="text" name="txt_site_code"  value="<?= $site; ?>"></td>
            </tr>

            <tr>
                <td>Location Name</td>
                <td><input type="text" name="txt_location_name" value="<?= $location; ?>"></td>
            </tr>

             <tr>
                <td><input type="hidden" name="txt_id" value="<?= $object_id; ?>"></td>
                <td><input type="submit" name="btn_submit" value="Submit"></td>
            </tr>

</table>
</form>

感谢您的帮助。

推荐答案

您必须防止php接收到空数据。

You have to prevent null datas, received by php.

示例：

$site = '';
if(isset($_POST['site'])) {
    $site = $_POST['site'];
}

在更新数据库之前，为每个要保护的值执行此操作。

Do it for each value you want to protect before update your database.

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